[css-values-5] Change attr(foo string) to attr(foo raw-string). #11645

Author: tabatkins

css-values-5/Overview.bs

@@ -1566,7 +1566,7 @@ Ian's proposal:
 		attr() = attr( <<attr-name>> <<attr-type>>? , <<declaration-value>>?)
 
 		<dfn>&lt;attr-name></dfn> = [ <<ident-token>>? '|' ]? <<ident-token>>
-		<dfn>&lt;attr-type></dfn> = <dfn function lt="type()" for="attr()">type( <<syntax>> )</dfn> | string | <<attr-unit>>
+		<dfn>&lt;attr-type></dfn> = <dfn function lt="type()" for="attr()">type( <<syntax>> )</dfn> | raw-string | <<attr-unit>>
 	</pre>
 
 	The <dfn>&lt;attr-unit></dfn> production matches any [=identifier=]
@@ -1623,7 +1623,7 @@ Ian's proposal:
 		Values that fail to parse as a <css>&lt;number></css>
 		trigger fallback.
 
-		If given as the <css>string</css> keyword,
+		If given as the <css>raw-string</css> keyword,
 		or omitted entirely,
 		it causes the attribute's literal value
 		to be treated as the value of a CSS string,